Elements of Geometry and Trigonometry: With Applications in MensurationA.S. Barnes, 1886 - 324 σελίδες |
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Αποτελέσματα 1 - 5 από τα 38.
Σελίδα 14
... opposite the right angle , is called the hypothenuse . 47. The base of a triangle is the side on which it stands . Thus , AB is the base of the triangle ACB . The altitude of a triangle is a line drawn from the angle opposite the base ...
... opposite the right angle , is called the hypothenuse . 47. The base of a triangle is the side on which it stands . Thus , AB is the base of the triangle ACB . The altitude of a triangle is a line drawn from the angle opposite the base ...
Σελίδα 15
... opposite sides parallel . 49. There are four kinds of parallelograms : 1. The rhomboid , which has no right angle . 2. The rhombus , or lozenge , which is an equilateral rhomboid . 3. The rectangle , which is an equian- gular ...
... opposite sides parallel . 49. There are four kinds of parallelograms : 1. The rhomboid , which has no right angle . 2. The rhombus , or lozenge , which is an equilateral rhomboid . 3. The rectangle , which is an equian- gular ...
Σελίδα 16
... opposite side or angle , perpendicular to the base . AXIOMS . 1. Things which are equal to the same thing are equal to each other . 2. If equals be added to equals , the wholes will be equal . 3. If equals be taken from equals , the ...
... opposite side or angle , perpendicular to the base . AXIOMS . 1. Things which are equal to the same thing are equal to each other . 2. If equals be added to equals , the wholes will be equal . 3. If equals be taken from equals , the ...
Σελίδα 19
... opposite or ver- tical angles which they form , are equal . Let the two straight lines AB and CD intersect each other at the point E : then will the opposite angle AEC be equal to DEB , and AED = CEB . A E B For , since the line AE ...
... opposite or ver- tical angles which they form , are equal . Let the two straight lines AB and CD intersect each other at the point E : then will the opposite angle AEC be equal to DEB , and AED = CEB . A E B For , since the line AE ...
Σελίδα 21
... opposite the equal sides are equal to each other . Let ABC be an isosceles triangle , hav- ing the side AC equal to the side CB : then will the angle A be equal to the an- gle B. B For , suppose the line CD to be drawn dividing the ...
... opposite the equal sides are equal to each other . Let ABC be an isosceles triangle , hav- ing the side AC equal to the side CB : then will the angle A be equal to the an- gle B. B For , suppose the line CD to be drawn dividing the ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
altitude angles equal base multiplied bisect called centre chains chord circle whose diameter circular sector circumference column comp cone consequently convex surface Cosine Cosine D Cotang cubic cylinder decimal diagonal dicular distance divided draw drawn equal Bk equal to half equivalent EXAMPLES feet figure find the area frustum greater half the arc half the product hence horizontal hypothenuse inches included angle inscribed intersection Let ABCD logarithm lower base measured by half Mensuration of Surfaces number of sides opposite angles outward angle parallel parallelogram parallelopipedon pendicular pentagonal pyramid perimeter perpen perpendicular plane prism PROBLEM proportion pyramid quadrilateral radii radius ratio rectangle regular polygon Required the area rhombus right angled triangle right angles Bk S-ABCDE segment side AC similar similar triangles slant height sphere straight line suppose Tang tangent THEOREM triangle ABC upper base yards
Δημοφιλή αποσπάσματα
Σελίδα 44 - Let ABC be a triangle, of which the side AC is greater than the side AB; the angle ABC shall be greater than the angle BCA.
Σελίδα 11 - A circle (Fig. 38) is a figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within, called the center.
Σελίδα 12 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 59 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 130 - ... or cylinder be cut by a plane parallel to the base, the section is a figure parallel and similar to the base. The one point a...
Σελίδα 209 - Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower Cway 33° 45' ; required the height of the tower.
Σελίδα 58 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, they are equal in all their parts.
Σελίδα 159 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Σελίδα 70 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D; and read, A is to B as C to D.
Σελίδα 33 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.